H.B. Fuller UR2179 is a two-part, flame-retardant polyurethane adhesive system designed to withstand sustained loads. It is ideal for bonding metals, as well as plastics, including composites, acrylics, and polycarbonate.

RTU Product Type: 2K (2 component) Adhesive

Compatible Substrates & Surfaces: Acrylic, Composites, Metal, Plastics, Polycarbonate (PC)

Chemical Family: Polyurethanes (PU)

Features: Flame Retardant, Medium Viscosity, Room Temperature Curing

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
Product Highlights
  • Self-extinguishing material
  • Bonds to plastic and metal substrates
  • Available in dual barrel cartridge for easy dispensing
  • Does not contain UV328

Applications & Uses

Properties

Typical Properties
ValueUnitsTest Method / Conditions
BasePolyurethane--
Cured Properties
ValueUnitsTest Method / Conditions
Elongation9.26%ASTM D638
Tensile Strength2150.91psiASTM D638
Lap Shear Strength (at 120°F/ 95% RH, aged 14 days, polycarbonate)1092.88psi-
Hardness (for 24 hours)70 - 75Shore DASTM D2240
Lap Shear Strength (at 120°F, 95% RH, aged 14 days, aluminum)2848.98psi-
Lap Shear Strength (aluminum)2863.51psi-
Burn Length (60s vertical burn test on glass fabric)5inch-
Modulus of Elasticity65941.41psiASTM D638
Lap Shear Strength (polycarbonate)925.81psi-
Self-Extinguishing Timemax. 1second-
Uncured Properties
ValueUnitsTest Method / Conditions
Mix Ratio (by Weight)100:46.3--
Mix Ratio (by volume)100:50--
Density (component B)1.22g/cm³-
Density (blend)1.3g/cm³-
Density (component A)1.31g/cm³-
Gel Time (at 77°F, 100g, blend)22minutes-
Viscosity (at 75°F, component A)28000cPsBrookfield RV Viscometer
Viscosity (at 75°F, component B)3800cPsBrookfield RV Viscometer

Packaging & Availability

Country Availability
Regional Availability
  • Europe
  • India/MiddleEast/Africa (IMEA)

Storage & Handling

Shelf Life
365 days (Component A), 180 days (Component B)
Storage Conditions
  • Components should be stored in a cool, dry area. The B-component should be kept in a tightly sealed container flushed with nitrogen.